A positive impact on everything we touch
Over 1800 dedicated people nationwide
Providing critical infrastructure for the UK
A positive impact on everything we touch
Over 1800 dedicated people nationwide
Providing critical infrastructure for the UK
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Severn Trent Water

Gas to Grid Plant

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nmcn were appointed by Clients Severn Trent Green Power to construct a biomethane gas to grid plant. The project based at Stoke Bardolph in Nottinghamshire turns gas produced from energy crops into a renewable gas that is a fully sustainable resource and can be injected directly into the grid

Key Information

Project

Gas to Grid Plant

Client

Severn Trent Water

Value

£6.2m

Delivery Business Unit

Major Projects

Benefits at a Glance

11% programme saving realised
Assets delivered early
Improvements to an existing asset

Challenges

The physical constraints of the site and the need to be able to keep the existing reservoir operational, meant that the design and construction team had to expose the west face of the existing buried reservoir to enable the new distribution chambers and pipework to be safely constructed between the new and old reservoirs.

Solutions

Crop materials are fed into large anaerobic digesters, bacteria are added and the mixture is kept at a specifc temperature range, as the crops break down methane is produced, this gas is then exported to the gas to grid unit.  The gas is then cleaned of any impuritites.

The gas is ‘washed’ at high pressure and then ‘squashed’ so it is at the same pressure as natural gas before being tested for quality. An odour is then added so it smells like normal gas and once that has been done, it is finally injected into the gas supply network.

We delivered:

  • New coccus tank
  • Three no. new pasco slabs
  • Five no. storage clamps
  • Two no. technical buildings
  • Flare stack
  • 120m overhead pipework

Results

The scheme was very successful and was one of three similar projects all of which were delivered by nmcn.

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